Industrial Internet Connectivity Framework | Page 4

4.2.1.1

Peer-to-Peer vs. Broker........................................................................................... 33

4.2.1.2

Data-Centric vs. Device / App-Centric...................................................................... 33

4.2.1.3

Explicit vs. Implicit Governance.............................................................................. 34

4.2.2

Data Considerations.......................................................................................................... 34

4.2.2.1

Content-Based Selection......................................................................................... 34

4.2.2.2

Time-Based Selection.............................................................................................. 34

4.2.3

Performance Considerations............................................................................................. 35

4.2.3.1

Real-Time................................................................................................................ 35

4.2.3.2

Latency and Jitter vs. Throughput........................................................................... 35

4.2.4

Scalability Considerations.................................................................................................. 35

4.2.4.1

Data Objects............................................................................................................ 35

4.2.4.2

Apps......................................................................................................................... 36

4.2.5

Availability Considerations................................................................................................ 36

4.2.5.1

Redundancy............................................................................................................. 36

4.2.5.2

Recovery.................................................................................................................. 36

4.2.6

Deployment Considerations.............................................................................................. 37

4.2.6.1

Platform Constraints............................................................................................... 37

4.2.6.2

Incremental Upgrades............................................................................................. 37

5 Connectivity Transport Layer........................................................................................... 38

5.1

Core Functions................................................................................................................... 38

5.1.1

Messaging Protocol........................................................................................................... 38

5.1.2

Communication Modes..................................................................................................... 39

5.1.3

Endpoint Addressing.......................................................................................................... 39

5.1.4

Connectedness.................................................................................................................. 39

5.1.5

Prioritization...................................................................................................................... 40

5.1.6

Timing & Synchronization.................................................................................................. 40

5.1.7

Message Security............................................................................................................... 40

5.2

Typical Considerations....................................................................................................... 41

5.2.1

Network Layer Considerations.......................................................................................... 41

5.2.1.1

Topology.................................................................................................................. 41

5.2.1.2

Span......................................................................................................................... 41

5.2.1.3

Segmentation.......................................................................................................... 41

6 How to Assess a Connectivity Technology?...................................................................... 42

6.1

General Info...................................................................................................................... 42

6.2

Business Viewpoint........................................................................................................... 43

6.2.1

Purpose.............................................................................................................................. 43

6.2.2

Pedigree............................................................................................................................. 43

6.2.3

Variants.............................................................................................................................. 43

6.2.4

Maturity............................................................................................................................. 43

6.2.5

Stability.............................................................................................................................. 43

6.2.6

Standards Body.................................................................................................................. 43

6.2.7

Openness........................................................................................................................... 43

6.3

Usage Viewpoint............................................................................................................... 43

6.3.1

Architecture....................................................................................................................... 43

6.3.2

Technology Options........................................................................................................... 43

6.3.3

Applications....................................................................................................................... 43